Tha Thong Mai (ท่าทองใหม่) belongs to Kanchanadit District, Surat Thani. The national old-community inventory lists its namesake settlement here. The municipal geographic profile describes the municipal area as flat Tapi-basin land, with Khlong Tha Thong Mai on its western side and coastal water and Khlong Bang Mut to the north. That municipal description should not be read as a precise boundary definition for every part of the wider tambon.
Include Mai in the destination name, since Tha Thong is a separate administrative area. Use the actual settlement street or property address for the last part of the journey. The administrative reference point is separate from an old-town landmark, canal landing or municipal office.